package com.guangyunl.k_exam;
//键盘类
public class KeyBoard implements USB{
    @Override
    public void open() {
        System.out.println("开启键盘");
    }

    @Override
    public void close() {
        System.out.println("关闭键盘");
    }


    //特有方法
    public void input(){
        System.out.println("键盘输入内容");
    }
}
